Defenseman Marc Methot, a native of Ottawa, got the opportunity to play at home when Murray traded forward Nick Foligno to the Columbus Blue Jackets for Methot in July 2012.
"He'll be missed. I've got a soft spot for Bryan," said Methot. "He's the reason why I came in here. I think he's the reason I was traded to Ottawa. You've got to root for a guy like him who's been battling through all kinds of adversity and still able to come in and work and do his job during the season. He'll be missed, but again, we're falling into good hands."
Dorion, 43, has been with the Senators for nine years and was named an assistant general manager in January 2014.
"You cannot be around this man and not feel the passion he has for others. I wouldn't be standing up here without the support of Bryan and I wouldn't have taken this job without his approval," Dorion said Sunday when he took over as general manager.
Murray ranks 14th in the League in games coached (1,239) and is 11th in wins (620). He coached the Washington Capitals, Detroit Red Wings, Florida Panthers and the Senators.
In addition to the Senators, he was general manager of the Red Wings, Panthers and Anaheim Ducks. The Panthers (1996) and Ducks (2003) advanced to the Stanley Cup Final.
Murray was hired as the Senators fifth coach on June 8, 2004. He had a 107-55-20 record and guided the Senators to their only appearance in the Stanley Cup Final in 2007, losing to the Ducks in five games. He was named Senators general manager in the summer of 2007.
In his nine seasons as general manager, the Senators made the Stanley Cup Playoffs five times, advancing to the second round in 2013.